Research on Flexible Grid-Connection Control Strategy of Distributed Power in New Energy Micro-Grid

Abstract:

Abstract: The point of the micro-grid distributed power's control is grid-connected inverter. The flexible grid-connection control technology provided an optimizing control method between distributed power and micro-grid and between micro-grid and power system. The flexible grid-connection control strategy includes flexible grid-connection control and flexible islanding control. The flexible grid-connection control achieves the good performance by means of regulation of the active and reactive power of micro-grid, while inhibiting the impact of impulse current, smooth power output, forecasting load and micro-grid power capacity. Based on the flexible grid-connection technology research of distributed power in micro-grid, the flexible master-slave method was presented based on PQ control, and the balance of power and the flexible control in micro-grid has been reached by it. The emulation and experiment results verify that the flexible master-slave method is effective; the balance of power, the flexible control when micro-grid is in islanding mode has been reached; the feasibility of the flexible master-slave method to stabilize the system was showed.

• Periodical: Applied Mechanics and Materials (Volumes 433-435)
• Pages: 1263-1270
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.433-435.1263
• Online since: October 2013
• Authors: Guo Wen Hu, Lin Wang, Yin Jie Wang
• Keywords: Flexible Grid-Connection Control, Flexible Master-Slave Control Method, Micro-Grid Distributed Power's, New Energy Micro-Grid, PQ Grid-Connection Control Strategy

References

[1] A.A. Moghaddam, et al. Multi-objective operation management of a renewable MG (micro-grid) with back-up micro-turbine/fuel cell/battery hybrid power source[J]. Energy, 2011. 36(11): 6490-6507.

DOI: 10.1016/j.energy.2011.09.017

[2] L. Blasques, J. Pinho. Metering systems and demand-side management models applied to hybrid renewable energy systems in micro-grid configuration[J]. Energy Policy, (2012).

DOI: 10.1016/j.enpol.2012.03.028

[3] T. Khatib, A. Mohamed, K. Sopian. Optimization of a PV/wind micro-grid for rural housing electrification using a hybrid iterative/genetic algorithm: case study of kuala terengganu, malaysia[J]. Energy and Buildings, 2012. 47: 321-331.

DOI: 10.1016/j.enbuild.2011.12.006

[4] Y.R. Mohamed, R. Seethapathy. Robust line-voltage sensorless control and synchronization of LCL-filtered distributed generation inverters for high power quality grid connection[J]. Power Electronics, IEEE Transactions on, 2012. 27(1): 87-98.

DOI: 10.1109/tpel.2011.2159866

[5] A. Kahrobaeian, Y.R. Mohamed. Interactive distributed generation interface for flexible micro-grid operation in smart distribution systems[J]. Sustainable Energy, IEEE Transactions on, 2012. 3(2): 295-305.

DOI: 10.1109/tste.2011.2178045

[6] Jun Zhou. Research on the energy control strategies of micro-grid[M]. Beijing Jiaotong University, Beijing, china, (2012).

[7] Yu Chen. Research on operation characteristic of micro-grid base on energy storage device [M]. Inner Mongolia University of Science & Technology, Hohhot, china, (2012).

[8] Jingjing Ma. Operation control and analysis of micro-grid based on the double-fed wind generator[M]. Taiyuan University of Technology, Taiyuan, china, (2011).

[9] Bobo Mao. Modeling and simulation of micro-grid operation and control[M]. Southwest Jiaotong University, Chengdu, china, (2012).